Cars ordered with a code before September 16th will qualify for free unlimited supercharging for the entire duration of original vehicle ownership. However, cars ordered after September 16th will only get one year of free supercharging.

​Model S, Model X and Model 3 Performance: Free Unlimited SuperchargingOwners can give five friends free, unlimited Supercharging with the purchase of a new Model S, Model X or Model 3 Performance. After September 16, 2018, full unlimited Supercharging will go away and owners will be able to give friends one year of unlimited Supercharging.